Railway tank car underframe



P 6, 1932- E. c. HALLQUIST RAILWAY TANK CAR UNDERFRAME Filed Oct.- 22, 1950 5 Sheets-Sheet 1 J/v vz/vroz I sePtr 1932 E. G. HALLQUISTI 1,875,594

RAILWAY TANK CAR UNDERFRAME Filed Oct. 22, 1950 5 Sheets-Sheet 2 HT OENEY P 6, 3 E. G. HALLQUIST 1,375,594

RAILWAY TANK CAR UNDERFRAME Filed Oct. 22, 1950 5 Sheets-Sheet 3 P 6, 1932- E. HALLQUIST 1,875,594

RAILWAY TANK CAR UNDERFRAME Filed Oct. 22, 1950 5 Sheets-Sheet 4 ENEY p 1932- E. G. HALLQUIST RAILWAY TANK CAR UNDERFRAME Filed Oct. 22, 1930 5 sheets sheet 5 HHHHHHHHHHHHHHHHHMHHHH Jw Patented Sept. 6, 1932 UNITED STATES "PATENT oFFIcE EIIIAR G. HA LLQU IST, OF EDWARDSVIL LE, ILLINOIS, ASIGNOR T GENERAL STEEL CASTINGS CORIORATION, OFv GRANITE CITY, ILLINOIS, A CORPORATION OF DELA- WARE RAILWA TANK CAR UNDERFRAME Appl icationj filed October 22 1930. Serial No.490,526. I

My invention relates to railway rolling,

stock and consists in a novel underframe structure particularly adapted for 'usein tank cars although adapted also for use in locomotive tenders.

The main objectof my invention is to provide a rigid, strong, economical, underframe which will formitself a portion of'the ve- 'hicle tank, thereby eliminating the necessity of constructing a completetanl: and mounting it upon a complete and separately constructed underframe. Another obj ect of my invention is to form the underfrarne of. very simple structure which is particularly ad 1 vantageous in casting the frame Preferably my invention is embodied in a one-piece casting structure in which a wide web plate of deep arcuate form extends between the bolsters and forms the sole load carrying and force transmitting member of the underframe. In this respect my present invention differs from prior structures which have uti- V lized the underframe as a part of the tank and have included side sills or center sills, or both,

in addition to a horizontalweb which formed the tank bottom. I A further object of my invention is to combine an arcuate underframe web with superstructure plates toform a cylindrical member extending substantially the full length of the car thereby forming a unit in which the superstructure contributes to withstanding the horizontal buttin andpulling forces, the vertical loads, and all other forces which are applied tothe car body or tank.

In the accompanying drawings which illustrate my invention:

Figure 1 is a top view'of the-underframe. Figure 2 is in part a side elevation, and in part a vertical section on the longitudinal frame. t Figure3 is an end view of the underframe. Figures 4, 5 and 6 are vertical transverse sections on thecorresponding section lines of Figure l. g

Figures 7 and 8 are detailed longitudinal vertical sections taken on the corresponding section lines of Figure 1; r i Figure 9 is a longitudinal vertical section through the end of a modified underframe,

Figure 10 is a top View of a portion of another modified underfrainef Figure 11 is a vertical transverse section taken on the line 11 -11 of Figure 10.

The main feature of my underframe is a web or plate extending substantially from end to end of the vehicle tank and forming the bottom quadrant thereof. Integral-with this web are elements cooperating with por-s tions of the web to form box shaped bolsters, each comprising an 1nner vertical'wall 1, an outer-vertical wall 2, a top wall 3 and abottom wall 4;

Intermediate. the bolsters, the web is ar-- I cuate in section, as indicated at'9, and the 35 sides terminate in outwardly inclined flanges 10 to which the tank superstructure side sheets 11 may be secured. -The end portions 6' of the web are substantially flat with out-1-- waroiy curved edges and include pads 7 which may be machined to provide a smooth mountmg surface'for the superstructure end plate 8. ElementslO and 7 are approximately 011alevel with the top wall of the bolster and with each other and form a substantially continuous element around the web periphery. The intermediate portion of the web curves downwardly near the longitudinal center line of the under'frame to a level adj acent that of the bottom walls of the bolster.

The radius of web portion 9 correspondssublstantially to that of thetank superstructure soth at the complete car forms a cylinder extending substantially from end to end, the superstructure plates being welded or riveted g to. the flanges provided on the underframc and serving to reinforce the underframe. This arrangement, together with the superstructure, elimin'atesthe necessity of the usual longitudinal sills between the bolsters as'the no width and depth ofthe arcuate portion of the web provides a section of sufli cient strength. v

The arcuate portion of the web is'rei'nforced at intervals with transverseribs 12 as which preferably extend above the level of the side, edges of thelweb and are provided 'lwitl suitable openings lii through which liquid and steam'pipes may pass; These transverse members also form diaphragm elements for preventing undue surging and splashing of the contents of the tank.

Extending outwardly from each bolster is a pair of draft sills arranged to accommodate the usual draft rigging and the outer wall 2 of the bolster forms a stop for the draft gear. The draft sills 15 extend through the box shaped bolster and project inwardly be yond wall 1 from which they are tapered downwardly, as indicated at 16, and merge with the arcuate portion 9 of the web.

The bolster structure includes brackets 17, for mounting side bearing elements, ackmg plate brackets 18, and center plates 23. The

inner wall 1 of the bolster is suit-ably reinforced by a flange 5 and vertical ribs 44.

Each pair of draft sills 15 includes an integral striking plate 19, coupler carrier 20 and draft gear yoke pin slots 21, and a bracket 22 is formed integrally with one of the draft sills and the adjacent portion of the corresponding bolster to mount a hand brake gear and a step and provides a platform for with a web of large area it is necessary to provide against excessive shrinkage strains which might be set up when the metal is v poured. For this purpose I corrugate the web 9 as indicated in Figure 8. While the,

arcuate member may beconsidered as a lar e corrugation in' itself and may therefore ta e care of some stresses set up in the cooling of the metal, I have found it advisable to provide additional corrugations to meet the conditions existing in casting the underframe. These corrugations also strengthen the web and better adapt it for actlng as a load carrying and force transmitting member. These corrugations may be varied in depth and length and may run transversely of the car as indicated at 4:1, lengthwise as shown at v 42, concentric as shown at 43, or may assume other forms.

In this preferred structure, the web forms the sole longitudinal member of the underframe between the bolsters but it is within the spirit of my invention to add longitudinal vertical elements resembling sills for reenforcing the arcuate web. Such .a modification is shown in Figures 10 and 11 in which the main member of the underframe is the arcuate web 31 extending substantially the full length of the tank and forming the top walls of the bolsters, the remaining portions of the bolsters including the vertical web 32 depending from the web 31. Similarly, intermediate braces or transoms 3.3-. depend from the web plate 31. This structure also with the arcuate web plate to form a cylindrical tank.v 1

In Figure 9, I illustrate another modifi cation of my invention in which the lower central portion 37 of the web plate extends to the outer wall 38 of the bolster and the space between the draft sills 39 in front of wall 38 mounts the draft rigging. The side portions of the web plate 37 at the sides of draft sills continue a short distance beyond the bolster and then curve upwardly, as well as outwardly, as indicated at 40, and thereby provide additional capacity beyond the bolster.

Various other modifications in the details of the car structure may be made without departing from the spiritof my invention and I contemplate the exclusive use of structures, similar to those described in detail herein, which. come within the scope of my claims.

I claim: 1 I r 1. In a railway vehicle underframe, bolsters, and a web extending between said bolsters andforming a substantiallycontinuous are from side to side and forming the lower portion of a tank and also formingthe main longitudinal element of the underframe between said bolsters. I 2..In a railway vehicle underframe integral structure, bolsters of box section, and an arcuate web extending between said bolsters with its sides substantially at the level of the V topsof said bolsters and withits downwardly curved intermediate portion extending substantially to the level of the bottoms of said bolsters, said web forming the main member of theunderfrarne between the bol- V sters for carrying loads and transmitting longitudinal forces.

3. In a railway vehicle underframe, bolsters, and an arcuate web extendingbetween I to brace it transversely of its length and to form the lower'portions of anti-splash elements of the tank structure.

*5. In a railway vehicleunderframe, bolsters, and an arcuate' web extending between said bolsters and forming the lower portion of a tank and also forming the main longitudinal element of theunderframe between said bolsters, there being integral vertical members extending across said web at intervals'and projecting above the level of the top edges of said arcuateweband serving to bracesaid web transversely'ofits length;

6. In a tankcar under'frame, spaced bol sters, an arcuate web extending'betweensaid bolsters and cooperating with the top plates of said bolsters to form the. car tank bottomand the sole underframe element intermedi-- ate said bolsters for carrying the car load,

and sills extending outwardly from the intermediate portions of said bolsters for mounting draft rigging, the center portion of said web curving downwardly to a level adjacent to the level of'the bottom of said sills. y

7. In a tank car underframe, spaced box shape bolsters, and an arcuate web extending between said bolsters, sills on the outer sides of said bolsters arranged to mount draft rig-' ging and extending through the bolsters and merging with said web on the inner side of the bolsters.

8. In a tank car underframe, spaced bolsters, a web extending between said bolsters and constituting a substantially continuous web extendin between the inner walls of said bolster and forming the main longitudinal member of the underframe and the bottom of the car tank between the bolsters, and a flange extending outwardly from the top of each bolster and forming the bottom of the end portions of the car tank, there being openings connecting the tank proper and the interior of said bolsters whereby the latter provides additional capacity for the vehicle.

10. In a railway vehicle underframe, spaced bolsters, each having a top plate and a vertical plate, a web plate extending between said bolsters and forming a concave recess below the top of said bolsters, a substantially horizontal flat plate extending outwardly from the top of each bolster toward the ends'of the underframc, all of said plates being substantially iinperfcrate and forming the bottom of a tank.

11. In a railway vehicle underframe inte-' gral structure, spaced bolsters, each having a top plate and a vertical plate, a web plate extending between said bolsters and forming a concave'recess below the top of said bolsters, all ofsaid plates-being substantially imperforate and forming the bottomof a tank, a reinforcing flange extending inwardly from the upper portions of each of said bolsters and substantially vertical reinforcing ribs on said-vertical plate and extending between said flange and said web plate. 1 I

12. In a railway vehicle underframe, spaced bolsters with substantially flathorizontal top walls, and an imperforate web plate extendingbetween said bolsters and, with said top walls, forming the bottom of a tank," the side edge portions of saidplate being located at substantially the same level as saidtop walls and the intermediate portion of said plate between said bolsters forming a recess extending below the top of said bolsters.

'13. In a railway vehicle underframe, a.

pair of bolsters and an imperforate web plate adapted to form the bottom of a tank,'the side edge portions of said plate being located at substantially the samelevel as the top of said bolsters and the intermediate portion of 1.

saidplate between said bolsters forming a pair of bolsters and an :imperforate web adapted to'form the bottom of a tank, each bolster top wall forming at least-a portionof eachof the web end portions, the intermediate portion of said web between said bolsters forming a recess extending below the top of said bolsters, substantially straight outwardly extendingflanges on the sides of said web for mountingtankside sheets, and arcuate elements on the ends of said web for mounting superstructure end sheets 15. In a railway vehicle underframe, a pair of bolsters and an imperforate web plate adapted .to form the bottom of a tank, the end portions. of said plate being located at the same levelas the top of said bolsters, and

the intermediate portion of said plate between said bolsters being inclined upwardly and outwardly on each side of the longitudinal center of said underframe from a point spaced below the top of said bolsters.

' 16. In a railway vehicle, a tank structure' recess extendingjbelow the top of said bolincluding an underframe and superstructure plates, said underframe including a' pair of .bolsters and an arcuate web plate extending; between said bolsters, said web plate'together I with said superstructure plates forming'a cylindrical structureof substantially uniform diameter adapted to transmit the longis tudinal bufiing and pulling forces applied to the vehicle; I 17. In a railway :veh1cle,anunderfr'ame in-- sills extending from the ends of the undercluding a web member having a substantially continuous arcuate form from side to side and extending substantially from end to end of the underframe, and superstructure sheets secured to the edges of said web member and forming therewith a cylindrical tank adapted vto transmit all of the bufling and pulling forces applied to the vehicle.

18. In a railway underframe, a palr of bolsters having top members, longitudinal frame to said bolsters, said sills having top members, an imperforate plate adapted to form a tank bottom and comprising a depressed portion extending between said bolsters and portions merging with the top members of said bolsters and draft sills to transmit longitudinal forces between said bolsters.

19. In a railway vehlcle underframe, a pair tending for a substantial portion of the distance between said bolsters with corrugations therein extending transversely, of the direction of curvature of the web.

26. In a railway vehicle underframe, bolsters, and a web of arcuate cross section extendingfor a substantial portion of the dis- I tance between said bolsters with corrugations therein extending parallel with the direction of curvature ofthe w b.-

27. In a railway vehicle underframe, bolsters, and a web of arcuate cross section .ex-

tending for a substantial portion of the distance between said bolsters with a series of concentric corrugations formed therein.

In testimony whereof I hereunto aflix my signature this 7th day of October, 1930. EINAR G. HALLQUIST.

of box shaped bolsters having top members, draft sills extending from said bolsters to the ends of said underframe, said draft sills having top members, anemperforate plate adapted to form the bottom of a tank ,and'comprising a portion extending between said bolsters and portions merging with said top members of said bolsters and draft sills, the

outer wall of said box shaped bolsters forming a draft gear stop.

20. In a railway vehicle underframe, a pair of bolsters and a main imperforate portion concave portion.

adapted to form the bottom of a tank, and

' comprising a continuous plate including the tops of said bolsters and extending outwardly to the ends of the tank bottom and including a concave portion between said bolsters and portions of a vertical wall of each bolster between the tops of the bolster and said having a web plate of substantially the same arcuate contour from sideto side as said superstructure which, together with said superstructure, is adapted to transmit all of the forces applied to said I tank structure.

23. A railway vehicle un-derframeincluding a web plate extending longitudinally of the underframe and having a continuously buffing and pulling arcuate cross section from side tov side and 7 adapted to transmit all of the longitudinal forces applied to thecunderframe.

24:.- A railway-vehicle .underframe includ- 25. In a'railway vehicle underframe, bolst'ers, and a web of arcuatecross section exing a longitudinally extending corrugated web plate and having an arcuate cross section. 

